import com.unboundid.ldap.sdk.LDAPSearchException; //导入依赖的package包/类
private SearchResult doSearch(LDAPConnection ldapConnection, String base, String filter) {
    try {
        return ldapConnection.search(base, SearchScope.SUB, filter);
    } catch (LDAPSearchException e) {
        if (!Strings.isNullOrEmpty(e.getDiagnosticMessage())) {
            log.error(e.getDiagnosticMessage());
        } else {
            log.error("Problem searching LDAP", e);
        }
        return null;
    }
}
 

import com.unboundid.ldap.sdk.LDAPSearchException; //导入依赖的package包/类
private SearchResult doSearch(LDAPConnection ldapConnection, String base, String filter) {
	try {
		return ldapConnection.search(base, SearchScope.SUB, filter);
	} catch (LDAPSearchException e) {
		logger.error("Problem Searching LDAP", e);
		
		return null;
	}
}